A H20 crank and the H25 block might not be a bad idea.
It will look original but with 2180 cc (???) if you can find
any pistons.
Thomas
Adam Bradley wrote:
> Agreed. But would be different...
>
> At 04:06 PM 8/9/2002 -0400, Peter Long wrote:
> >sounds like a lot of trouble, considering the known qualities of the SR
> >and KA swaps....
> >
> >
> >
> > > -----Original Message-----
> > > From: Thomas - Sweden [mailto:csp311@telia.com]
> > > Sent: Friday, August 09, 2002 3:58 PM
> > > To: datsun-roadsters@autox.team.net
> > > Subject: Re: H25 engine
> > >
> > >
> > > Long stroke 4-cylinders are Volvo S40 & V40
> > > with 1948 cc (90 mm) no balance shafts.
> > > Saab 2300 cc (90 mm) 2 balance shafts.
> > > There was a rare FJ24 engine but it had
> > > less than 90 mm. I think Honda makes some
> > > really long ones. These are reasonably high
> > > output engines with forged crankshafts. Long
> > > stroke 4-cylinders without balance shafts are
> > > not the smoothest running engines in the world.
> > > Current production engines are going towards
> > > longer stroke to compensate for low rpm torque
> > > in 4-valve designs (fuel economy issues) but
> > > many of them use counter balance shafts.
> > > I've had a Nissan King Cab with a Z24 engine.
> > > Long stroke 5, 6, 8, 10, 12 cylinder engines
> > > dont have the same vibration problems.
> > >
> > > Thomas
> > >
> > > Marc Sayer wrote:
> > >
> > > > Adam Bradley wrote:
> > > > > Stroke is 93mm. Maybe you can use an H20 crank in an
> > > H25 block and get
> > > > > like 2300cc?
> > > > >
> > > > > At 07:31 PM 8/9/2002 +0200, Thomas - Sweden wrote:
> > > > >
> > > > >>Hmm, I wonder about bore & stroke.
> > > > >>If stroke is over 90 mm I dont want to
> > > > >>be too close if it reach 6000 rpm.
> > > >
> > > > A 3.66" stroke isn't all that bad. Here is a Chevy V8 B&S
> > > chart with the
> > > > engines in that stroke range and longer. Some of these can
> > > be made into
> > > > pretty high revving motors, 6000 rpm for sure. :-)
> > > >
> > > > 325 = 3.780" x 3.62" ('99-later, Gen.III, "LM7" 5.3 Liter
> > > Vortec, 6.098"
> > > > rod)
> > > > 346 = 3.900" x 3.62" ('97-later, Gen.III, "LS1", 6.098" rod)
> > > > 350 = 3.900" x 3.66" ('89-'95, "LT5", in "ZR1" Corvette
> > > 32-valve DOHC,
> > > > 5.74" rod)
> > > > 364 = 4.000" x 3.62" ('99-later, Gen.III, "LQ4" 6.0 Liter
> > > Vortec, 6.098"
> > > > rod)
> > > > 383 = 4.000" x 3.80" ('00, "HT 383", Gen.I truck crate
> > > motor) (5.7" rod)
> > > > 400 = 4.125" x 3.75" (Gen.I, 5.565" rod)
> > > >
> > > > A TR6 had a stroke of 3.74" and they could be made to turn
> > > 6000 easily,
> > > > even with their old Brit technology and 4-main cranks.
> > > >
> > > > The issue is going to be the quality of the parts, the
> > > weights of the
> > > > parts, and the design parameters for the parts. And there
> > > is where you
> > > > may have issues. The motor is a forklift motor, I doubt if it was
> > > > designed to see more the 4000-4500 rpm. OTOH you could use it as the
> > > > basis for a good motor and just upgrade or rework some parts.
> > > >
> > > > --
> > > > Marc Sayer
> > > > Journalist, Photographer, Dog Trainer (APDT member #062956)
> > > >
> > > > Passions -
> > > > Great Danes, auto racing and fast cars, my wife
> > > >
> > > > Dogs -
> > > > Gracie, Tank, Delilah, PJ, & the rescue dogs
> > > >
> > > > Cars -
> > > > 82 280ZX Turbo, 71 510 Trans Am vintage racer, 93 Ford E150
> > > Tow/dog van
> > > >
> > > > My Homepage - http://gracieland.org
> > > >
> > > > Deaf Dane Rescue Homepge - http://gracieland.org/DaneRescue/
> > > >
> > > > Any Dane at the races is a Great Dane!
> > > >
> > > > /// datsun-roadsters@autox.team.net mailing list
> > > > /// Send admin requests to majordomo@autox.team.net or go to
> > > > /// http://www.team.net/cgi-bin/majorcool
> > > > /// Send list postings to datsun-roadsters@autox.team.net
> > >
> > > /// datsun-roadsters@autox.team.net mailing list
> > > /// Send admin requests to majordomo@autox.team.net or go to
> > > /// http://www.team.net/cgi-bin/majorcool
> > > /// Send list postings to datsun-roadsters@autox.team.net
> >
> >/// datsun-roadsters@autox.team.net mailing list
> >/// Send admin requests to majordomo@autox.team.net or go to
> >/// http://www.team.net/cgi-bin/majorcool
> >/// Send list postings to datsun-roadsters@autox.team.net
>
> Adam Bradley
> '70 Datsun 1600 Roadster SPL311-28181
> '67 Datsun RL411 SSS sedan RL411-11321
> '66 Datsun PL411 sedan PL411-022447
> http://www.picturetrail.com/abend
>
> /// datsun-roadsters@autox.team.net mailing list
> /// Send admin requests to majordomo@autox.team.net or go to
> /// http://www.team.net/cgi-bin/majorcool
> /// Send list postings to datsun-roadsters@autox.team.net
/// datsun-roadsters@autox.team.net mailing list
|